Privacy Badger is a browser privacy extension designed to block third-party trackers and strip monitoring parameters from URLs to protect user anonymity. It functions as a heuristic tracker blocker, identifying tracking domains by analyzing their appearance across multiple websites.
The extension includes a link tracking sanitizer that uses regular expression matching to remove identifiers from outgoing links before navigation occurs. It also acts as a third-party content controller, replacing embedded trackers and social widgets with placeholders that only activate upon manual user interaction.
Additional capabilities cover the prevention of browser fingerprinting through canvas API mocking and the management of web privacy preferences by sending do not track signals. Users can manage domain permissions via manual overrides to determine if specific domains are blocked, filtered, or allowed.
